Defender 530+ Plus Medium Range Calibrator

Product Image of Defender 530+ Plus Medium Range Calibrator

The Bios Defender 530+ Plus Medium Range Calibrator has the ability to take both volumetric and standardized readings, adding to the line of DryCal primary flow calibrators on the market today. Automatic correction of readings for temperature and pressure, rather than merely recording of ambient conditions is essential in many applications.

The Defender 530+ Plus provides users with a true primary flow calibrator for industrial hygiene, environmental and laboratory applications.

Defender primary flow meters are designed to provide light weight ultra-compact size, incorporating the industry leading DryCal technology. Building on the patented DryCal near-frictionless piston technology, the Defender 500 series incorporates features to make it immune to flow source pulsation without the need for in-line dampers.

The Defender 530+ Plus is easy to use.  Turn it on. Connect it to a sampling pump. Start taking readings. It's as simple as that. Calibrations within a minute with no messy soap bubble solutions to wait on or clean up.


  • Proven percent of reading accuracy is supported by ISO 17025 accreditation by NVLAP of NIST
  • Integrated temperature sensors and pressure transducers placed directly in the flow stream for optimum standardized results.
  • Defender 530 =.±1% of reading volumetric, ±1.2% of reading standardized for temperature & pressure


  •  Housed in a molded case with rubber handgrips for a better feel and a sleeker, more contemporary look
  •  Large illuminated flow cell viewing window
  •  Navigation menu and a large, illuminated graphical display with zoom feature
  •  Rated for extreme cold operation, down to -20 ºC
  •  RoHS (Restriction of Hazardous Substances) compliant for Europe
  •  Automatic Shutoff


  •  Choose between flow units
    • Volumetric: mL/min, L/min, cc/min, or cf/min
    • Standardized: smL/min, L/min, cc/min, scf/min
  •  Include up to one hundred readings in a group average
  •  Take individual readings, continuous hands-free readings, or set to read in time intervals anywhere from one minute to sixty minutes between readings

Flow Range - Medium 

  • 50-5,000ccm

What Is Included

  • Instrument
  • Serial Cable
  • 100-240V AC Power Adapter/Charger with US Plug Configuration
  • Plastic Leak Test Caps (2)
  • NIST-Traceable Calibration Certificate
  • Mini-Manual and Instructions for downloading the free DryCal Pro Software

Defender 530+ Plus Medium Range Calibrator
Item # 530M 

Add to Quote for Pricing 

Add to Quote

KV Ordering


Add as many items to your Keika Ventures quote request as you like. When you have found all your items, go to the Quote page and submit your Request-A-Quote. We'll send you a detailed quote including shipping costs and a payment link so that you can complete your order.